CHUDAK, O. O. On the subject of cloud cryptography. CTE Workshop Proceedings, Kryvyi Rih, Ukraine, v. 1, p. 52, 2013. DOI: 10.55056/cte.86. Disponível em: https://acnsci.org/journal/index.php/cte/article/view/86.. Acesso em: 16 aug. 2026.